External Firewire drive won't appear in finder

I have an old G4800 quicksilver in my music room that only gets used for recording. I bought a LaCie 160G FW drive so that I could move a lot of the audio files (digital performer) from that computer to another machine in the house for mixing.

My problem is this: the LaCie hard drive won't show up on the G4 (OSX v 10.2.3) machine at all. In Disk Utility, it appears as an "unmounted" and "Untitled" disc, but it never appears in the finder or on the desktop. What can I try to get this going? I'd like to be able to carry this drive to a machine running Tiger eventually.

Probably. You definitely need to use Disk Utility to format the drive (use HFS+ unless you want to share with Windows, in which case you should use FAT32 (which has limitations relative to HFS+)), and that's probably the way to do it.